This is an Accepted Manuscript of a book chapter published by Routledge in Experiencing Byzantium
Papers from the 44th Spring Symposium of Byzantine Studies, Newcastle and Durham, April 2011, on 23/10/2013, available online: https://www.routledge.com/Experiencing-Byzantium-Papers-from-the-44th-Spring-Symposium-of-Byzantine/Nesbitt-Jackson/p/book/9781472412294